ci: add skill generator workflow and scripts

.github/workflows/skill-generator.yml

@@ -0,0 +1,48 @@
+name: sync-sandbox-agent-skill
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  generate:
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Generate skill artifacts
+        run: node scripts/skill-generator/generate.js
+
+      - name: Sync to skills repo
+        env:
+          SKILLS_REPO_TOKEN: ${{ secrets.SKILLS_REPO_TOKEN }}
+        run: |
+          if [ -z "$SKILLS_REPO_TOKEN" ]; then
+            echo "SKILLS_REPO_TOKEN is not set" >&2
+            exit 1
+          fi
+
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+
+          git clone "https://x-access-token:${SKILLS_REPO_TOKEN}@github.com/rivet-dev/skills.git" /tmp/rivet-skills
+
+          mkdir -p /tmp/rivet-skills/skills/sandbox-agent
+          rm -rf /tmp/rivet-skills/skills/sandbox-agent/*
+          cp -R scripts/skill-generator/dist/* /tmp/rivet-skills/skills/sandbox-agent/
+
+          cd /tmp/rivet-skills
+          git add skills/sandbox-agent
+
+          if git diff --cached --quiet; then
+            echo "No skill changes to publish"
+            exit 0
+          fi
+
+          git commit -m "chore: update sandbox-agent skill"
+          git push